Search U.S. government technical reports digitized or harvested by TRAIL.
Safety practices in churn drilling at Morenci Branch, Phelps Dodge Corp, Morenci, Ariz.
Conditions and practices at coal mines in the Ruhr district of western Germany
Effect of temperature on flame-arresting properties of flat joints in explosion-proof mine equipment
A study to determine factors causing pressure piling in testing explosion-proof enclosures
Organizations with programs beneficial to coal-mine employees
Elimination of ethyl mercaptan vapor-air explosions in stench warning systems
International cooperation in reducing mine hazards
Respiratory protective devices approved by the Bureau of Mines as of October 16, 1958